The Sweetener Wars | Attack of the Cancer Rats | 1

26 Aug 2026 · 46 min · 17 chapters

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In short

The “Sweetener Wars” traces how artificial sweeteners (cyclamates, saccharin, then aspartame) are regulated, marketed, and fought over—starting with bans under the Delaney Amendment and culminating in brand-driven competition (Sweet ’n Low vs Equal/NutraSweet) and political/legal pressure.

Guests (named in the episode)

No podcast guests appear as interview subjects. The episode is narrated/dramatized with named figures: Marvin Eisenstadt (Cumberland Packing), Ben Eisenstadt, Donald Rumsfeld (Searle CEO), Arthur Hayes (FDA commissioner), Roger Enrico (Pepsi CEO), Donald Kendall (PepsiCo CEO), Robert Shapiro (NutraSweet division), Joe Asaro (Cumberland government affairs), Jeff Eisenstadt, and Ethel Shapiro (shareholder).

Key claims

Cyclamate and later saccharin bans follow cancer-risk studies plus the Delaney Amendment’s “any risk” rule; Cumberland survives by switching recipes to saccharin; Searle wins by patenting and branding aspartame (NutraSweet/Equal); diet soda demand is shaped by labels/branding more than blind taste tests.

Notable examples

Sweet ’n Low switches to 100% saccharin within days of cyclamate ban; Congress delays saccharin ban 18 months; NutraSweet gumball mailers; Diet Coke adopts NutraSweet blend first; Pepsi later goes 100% NutraSweet using “no saccharin” messaging.

Written by AI. May contain mistakes. Listen to the episode to check what was said.

Chapters

Tap a time to open that second in VO

The Ban on Cyclamate

0:29 to 2:18

Health Secretary orders a ban, impacting Marvin's business strategy.

“Finch today ordered a ban on foods and drinks containing the artificial sweetener Cyclamate.”

Marvin's Emergency Plan

2:18 to 4:08

Marvin discusses switching Sweet 'n Low's recipe to save the business.

“He hurries to the phone and calls the boss of Cumberland, his dad.”

Reformulation and Market Strategy

4:08 to 6:11

Cumberland Packing reconfigures to launch a cyclamate-free Sweet 'n Low.

“The next few days are a blur of activity.”

The Rise of Sweet 'n Low

6:11 to 9:31

Sweet 'n Low captures market share and becomes a dominant player.

“Now, its bright pink sachets are everywhere.”

Marvin's Live TV Debut

9:31 to 12:34

Marvin prepares for a live TV interview amidst mounting saccharin concerns.

“The shortages threatened to halt deliveries.”

The Saccharin Ban Announcement

12:34 to 14:00

FDA announces a ban on saccharin, leading to national panic and turmoil.

“He holds a teletype message in his hand.”

Cumberland's Fight for Saccharin

14:00 to 16:28

Learn about Cumberland's aggressive tactics to protect saccharin amidst cancer concerns.

“pleading with them not to take away their sweetener.”

Searle's Struggles and Aspartame's Journey

17:29 to 28:00

Explore Searle's challenges and the political maneuvering behind aspartame's approval.

“April 1977, Illinois, one month after the FDA announced its intention to ban saccharin.”

The Sweetener Market Tension

28:00 to 29:23

Explore the intense negotiations between sweetener companies amid regulatory challenges.

“We're entering the tabletop sweetener market one way or another, and you know that aspartame tastes better than saccharin.”

Aspartame's Market Introduction

29:23 to 30:49

Learn about Searle's strategies to launch aspartame under different branding.

“Searle brings aspartame to market, but under two different names.”
Show all 17 chapters

Battleground of Diet Sodas

30:49 to 33:03

Understand the competition between aspartame and saccharin in diet sodas.

“It also seeks to raise awareness using free gumballs and TV ads.”

Pepsi's Strategic Meeting

34:20 to 36:37

Delve into Pepsi's discussions regarding the new aspartame sweetener.

“is dining at a high-end French restaurant with Robert Shapiro, the president of Searle's NutraSweet division.”

The Deal Dynamics

36:37 to 38:37

Analyze the negotiations and stakes of using aspartame in Diet Pepsi.

“A few weeks later, Shapiro makes a deal to add NutraSweet to Diet Coke as part of a blend of aspartame and saccharin.”

NutraSweet as a Brand

38:37 to 41:14

Discover how Searle positions NutraSweet as a desirable ingredient.

“If products were judged only in blind taste tests, branding departments would be a whole lot smaller.”

Sweet 'n Low's Market Response

41:14 to 42:00

Examine Sweet 'n Low's reaction to the introduction of Equal and market dynamics.

“It's spring 1984, and at Cumberland Packings Factory in Brooklyn, the Sweet 'n Low manufacturer is grappling with the impact of Equal's arrival.”

Cumberland's Struggles in the Sweetener Market

42:00 to 46:19

Explore Cumberland's challenges as it loses market share to Equal and faces regulatory threats.

“or found the cancer warnings off-putting.”

Jeff Eisenstadt's Discovery of Fraud

46:19 to 47:43

Jeff Eisenstadt uncovers troubling signs of fraud within Cumberland's suppliers.

“Jeff is Marvin's son, a red-haired surfer who, after finishing his studies, reluctantly left San Diego to take a job as a vice president at the family business.”
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Transcript

Automatic transcript. May contain errors.

0:28Hey, Business Wars fans, have you heard?

0:35Health Secretary Robert H. Finch today ordered a ban on foods and drinks containing the artificial sweetener Cyclamate. It's October 18th, 1969. At his beachside home in Queens, New York, Marvin Eisenstadt stares open-mouthed at the TV. The Evening News is reporting on how the federal government has just nuked his business. Marvin is the executive vice president of Cumberland Packing, the maker of sugar substitute Sweet 'n Low, and the government has just banned one of its core ingredients, the artificial sweetener cyclomate. It's a dizzying turn of events. Earlier that month, the FDA reassured the nation that cyclomates were safe after a flawed study claimed they'd deformed chicken embryos.

1:23But now there's a new study, and this one found that some rats developed bladder cancer after being fed large amounts of the sweetener. Marvin turns to his wife, his shock, turning to rage. This is nonsense. A man would have to drink hundreds of cans of diet soda a day to consume the same amount of cyclamates they gave those rats. They're killing a billion-dollar business on junk science. Marvin's wife nods sympathetically as he paces the room. He knows the government had no choice, A law called the Delaney Amendment requires that any additive shown to cause cancer has to be banned from non-prescription food and drink, no matter how tiny the risk.

2:05Marvin thinks the law's idiotic, but he can't fix that. What matters is that Sweet 'n Lowe and the family business now face extinction when the ban takes effect in just over three months from now. He hurries to the phone and calls the boss of Cumberland, his dad. Hey, Pop, it's Marvin. You heard the news? Yes, I heard the news, and I'm furious. Yeah, yeah, I know. No, this is outrageous. But listen, Pop, I got a plan. Remember the all-saccharin recipe? The kosher one? Yeah, the kosher one. I'm thinking we switch to that. Hmm. Actually, that's a great idea. Fantastic. We should move fast. Yeah, that's what I'm thinking.

2:51We should call everyone in. Start tonight. No delays. You're a smart cookie, Marvin. Thanks. We'll see you there. With that, Marvin grabs his coat and heads to the company's factory in Brooklyn. He's about to set into motion a plan that won't just save sweet and low. It will make it king of the table sugar substitutes.

3:19Police in Irvine, California are investigating the double murder of a young couple in the parking lot of their apartment complex. A double homicide grabs the public's attention by the throat. We have identified Christopher Dorner as a suspect in this double homicide. A former cop and still on the loose. Considered armed and extremely dangerous. And scariest of all, he left something behind. A particular interest is a multi-page manifesto. This manifesto on Facebook is 11 pages long. Trace, this manifesto from this suspect who's targeting cops, it's stunning. Listen to the show The New Yorker calls one of the best podcasts of the summer.

3:58Dan Taberski's Manifesto. And I tell you, this manifesto, it scares the hell out of me. Listen to Dan Taberski's Manifesto wherever you get your podcasts or binge the entire series right now, only with Audible.

4:17The next few days are a blur of activity. Marvin's plan is to change Sweet & Low's recipe from a mix of cyclamates and saccharin to 100 % saccharin. He knows the competition will do the same. Saccharin is the only other artificial sweetener available. But what those rivals don't have is a recipe that's ready to go. Saccharin tastes less like sugar than cyclomates and leaves a metallic aftertaste, so it needs to be mixed with something else to make it more palatable. But Cumberland's already solved that problem. Years earlier, the company developed a kosher version of Sweet 'n Low that used dextrose and cream of tartar instead of the dairy product lactose and also contained no cyclomates, just saccharin.

5:07It did okay in taste tests, but never went into production. Now that mothballed project is about to pay off. Cumberland rewires supply chains, reconfigures machinery, and reorders production lines. It redesigns Sweet & Lowe's packaging to promote the absence of cyclomates, and secures an emergency loan of a million dollars to pay for everything. Then the company phones every distributor and tells them to dump their entire stock of Sweet 'n Low. This costs Cumberland$2 million. But it clears the path for the new formula to hit stores immediately. On October 22nd, just four days after the ban was announced, the reformulated product is on trucks leaving the factory, and newspapers are running ads for the new and improved Sweet 'n Low without cyclamates.

6:02Sales triple as Sweet 'n Low grabs customers and shelf space from slower-to-react rivals. Before the ban, Sweet 'n Low was a mid-sized player in a packed field. Now, its bright pink sachets are everywhere. Within 18 months, Sweet 'n Low captures more than half of the tabletop sweetener market. By the time the competition releases their Cyclomate-free alternatives, it's too late. Marvin has turned disaster into the ultimate victory. And it'll stay that way right up until Saccharin becomes the government's next target.

6:50From Audible Originals, I'm David Brown, and this is Business Wars.

7:18This is a story that began with a mistake. A chemist forgot to wash his hands before dinner, then wondered why his bread tasted so intensely sweet. He traced the source back to his lab, to a compound he later named saccharin, the world's first artificial sweetener. Until then, sweetness came from natural sources like sugarcane, corn syrup, and honey. But it also came packed with calories. Saccharin and its followers offered something miraculous, sweetness without the calories. They didn't taste as good as sugar. But for legions of calorie counters and diabetics, it was a price worth paying. By the 1960s, saccharin and cyclamates were threatening sugar producers as people switched from full sugar colas to diet sodas and stores stocked low-calorie desserts.

8:16But then, cyclamates got banned on the back of a now-debunked study. And ever since, artificial sweeteners have been loved and distrusted in equal measure. So, what does it take for sugar substitutes like Sweet 'n Low, Equal and Splenda to thrive when scientists, regulators and health-conscious consumers continually threaten ruin? It takes cunning. Because the sugar substitute business is anything but sweet. It's a world of backroom deals in D.C. fraudsters infiltrating factories, manipulation of public perception, and bitter courtroom showdowns. This is Episode 1, Attack of the Cancer Rats.

9:08By 1977, Sweet 'n Low manufacturer Cumberland Packing is the sugar substitute king. Since its lightning-fast switch to saccharin, its position has proved unassailable. Not even the oil crisis of 1973 could stop it. When the OPEC oil embargo hit, gas prices spiked by 50 percent and fuel shortages spread across the country. The shortages threatened to halt deliveries. So, Cumberland bought a gas station to make sure its trucks kept rolling. It's a far cry from 1940 when Marvin Eisenstadt's father, Ben, started the business as a cafeteria across from the Brooklyn Navy Yard. After the war, his customers disappeared, so he retooled the place into a teabag factory.

9:57The company struggled, so he pivoted again, repurposing the teabagging machine to pack individual packets of sugar, ketchup, soy sauce, and more for the food service industry. Then, one day in the 1950s, a pharmaceutical company asked if he could pack a sugar substitute into individual sachets for diabetics to use in hospitals. By the time Cumberland created the product, the drug company had lost interest. So, Ben and his son Marvin released it themselves in 1957. They called it Sweet and Low, after a sheet music tune from the early 1900s, and put it in bright pink paper packets so it stood out from the white packaging used for sugar.

10:44Now, those pink packets are ubiquitous, from diners and coffee houses to hotels and airlines. Sweet and Low has become America's best-selling sugar substitute. But after seven years on top, trouble is coming.

11:06It's 1977, and Marvin Eisenstadt is trying to calm his nerves. He's in the studio of WNBC-TV in New York and about to make his live television debut. Marvin is here because fears about artificial sweeteners are in the headlines again. This time, saccharin is under suspicion. There's been a steady flow of studies questioning its safety for years, many funded by sugar producers. But the latest study is different. This one was bankrolled by the Canadian government. It found that rats fed large amounts of saccharin are more likely to develop cancer, prompting Canada to ban the sweetener. Marvin's not worried, though.

11:51The scientists gave those rats so much saccharin, It'd be like a human drinking 800 cans of diet soda a day. Sure, the scientists countered that the large amount was necessary because rats have a much higher metabolic rate than humans. But Marvin's point is simple. This study doesn't prove saccharin is a carcinogen. And any risk is very low. One minute to air. Besides, Marvin has been reassured that the Food and Drug Administration wouldn't ban saccharin without a fair hearing. Plus, saccharin is the only artificial sweetener on the market. To ban saccharin is to ban all artificial sweeteners.

12:32Frank Field, the newsman who's interviewing Marvin, arrives. He holds a teletype message in his hand. Marvin, pleased to meet you. A quick heads up, we just got this in. 30 seconds. Field sits. A makeup lady rushes in to give him a quick touch-up. The cameras roll into position as Marvin stares at the teletype. The FDA has just announced that saccharin will be banned. Ten seconds. Eight, seven, six, five. Marvin's business, and the entire sweetener industry, is toast. He looks up. The countdown ends. He barely registers Field announcing the saccharin ban or introducing him to viewers. Not until Field asks his first question.

13:19Marvin, what's it like being put out of business?

13:28The decision to ban America's only artificial sweetener sends shockwaves through the nation. There will be no more diet soda, no sugar-free gum, no reduced-calorie desserts, no diabetic-friendly baked goods, no flavored medicines, and no more Sweden Low. With the ban expected to go into effect in just four months, panic erupts. Consumers rush stores to stockpile supplies before they disappear. Some call the FDA in tears, pleading with them not to take away their sweetener. But the Delaney Amendment is clear. Any additive found to cause even the slightest increased risk of cancer must be banned.

14:13With Cumberland's future on the line, Marvin goes on the attack. In newspaper interviews, he calls the ban outrageous, harmful, and built on flimsy science. He appears in ads buried up to his neck in sweet and low packets to show how many someone would have to consume to mash the saccharine dose given to those lab rats. His dad, Ben, Cumberland's founder, heads to D.C. to deliver angry testimony to Congress. He also finds ways to pressure the government into overruling the FDA. Cumberland publicly declares it has stopped making Sweet 'n Lowe and put 700 employees on forced vacation. The announcement stokes customer panic and inspires unions to join the fight to save jobs.

15:04But it's all a ruse. Sweet 'n Lowe remains in production. None of Cumberland's employees are facing layoffs. In fact, the surge of panic buying has caused Cumberland to add another shift at its factory just to keep up with demand. And Cumberland's not fighting alone. The entire sweetener industry is battling to survive. Cyclomates are already gone. Other sweeteners are struggling to get approved. Saccharin is the only option. And if it goes, a$2 billion industry will go with it. Under pressure from every direction, Congress finally intervenes. It overrules the FDA and delays the ban by 18 months.

15:56But this stay of execution comes with a cost. All food and drink containing saccharin must now carry a warning that it causes cancer. It's far from ideal. And with no alternative sweetener to turn to, the future looks bleak. Sweet and Low entered 1977 riding high. Now, it lives under the threat of imminent destruction.

16:27Imagine you're reading Pride and Prejudice. Except you're not reading it. Harris Dickinson and Marissa Abella are reading it to you on Audible. Her barbs sting you. His coldness sends a shiver up your spine. Your heart aches. Your ears burn. You yearn for Elizabeth and Mr. Darcy to profess their undying love for one another. You can't bear it any longer. Well, maybe a chapter longer. Performance is so good, you'll give love a second chance. Audible. Stories that speak to you. You stepped out for your morning jog. Except it's not your usual morning jog. You started listening to an epic sci-fi book on Audible.

17:0630 chapters later, you've accidentally run a half marathon. You lost track of how far you've run, somewhere just past the city limits. You can't stop. You have to find out what happens next. Then it's over. The universe seems bigger. You feel different. You feel like you have no idea where you are. Audible. Stories that speak to you.

17:40April 1977, Illinois, one month after the FDA announced its intention to ban saccharin. In a conference room, G.D. Searle and Company is hosting its annual shareholder meeting. Founded in 1888 by a Chicago chemist, Searle is now a major pharmaceutical company, famed for introducing Enovid, the first oral contraceptive. But these days, the company's ailing. It has delivered eight straight quarters of weak earnings, and its stock price has dropped by half. The company is also under investigation for its animal safety research practices, accused of, at best, sloppiness, and at worst, deliberate falsification, including concealing tumors that developed in lab animals during tests.

18:29The fallout has led to some of Searle's new products being denied approval, including a new artificial sweetener called aspartame. With the business in crisis, Searle's board of directors is parachuting in a new CEO, Donald Rumsfeld, the former Secretary of Defense in President Ford's administration. The choice is raising eyebrows among the stockholders who will sign off on his appointment. Rumsfeld knows nothing about chemistry. He's a career politician with zero business experience. And Searle is no mom and pop. It's a multinational with annual sales of more than$760 million. After Rumsfeld is introduced, a middle-aged woman stands.

19:16My name is Ethel Shapiro. I'm a shareholder. Mr. Rumsfeld, you've not worked in business before, let alone a company like this one. So, why are you worth the quarter of a million dollars annual salary that you'll receive as CEO? Rumsfeld smiles. That sounds a lot like my mother. She was surprised too.

19:43Now, I'm not the only one who set my salary. The board of directors did. Whether I am worth it, I'll have to prove that to all of you. The board will have many opportunities to review my performance and determine whether I deserve that level of compensation, but I intend to do my best to earn it. Rumsfeld might be untested, but Searle's directors believe he can make the tough calls needed to fix the business. He starts not so much by swinging the axe as wielding a chainsaw. He slashes budgets, shrinks headcount, decentralizes decision-making, and sells off non-core businesses. He also makes it a priority to get aspartame out of regulatory hell.

20:37Like saccharin, aspartame was an accidental discovery. Back in 1965, one of Searle's chemists was working on an anti-ulcer drug when some of the compounds spilled on his hand. He then licked his finger to turn a page of a book and was taken aback by the sweetness. After telling the chemist off for his sloppy lab habits, the company realized he'd stumbled on something big, an artificial sweetener that's extremely sweet, with a slight bitterness but free of the metallic aftertaste that comes with saccharin. After further study, Searle patented aspartame in 1969 and asked the FDA to approve it as a food additive.

21:18To speed up the process, Searle only asked for permission to use it in dry foods. It hoped aspartame could fill the gap left by the cyclamate ban. But then the setbacks came. Aspartame's first problem is its phenylalanine content. Phenylalanine is an amino acid, a building block of proteins. It causes most people no harm, but for those with an inherited condition called PKU, it's dangerous, capable of causing brain damage and intellectual disability. So, Searle agreed that products containing aspartame must carry a warning label about this. The FDA approved aspartame in 1974, but the decision was immediately challenged over concerns it could cause brain damage in children when combined with monosodium glutamate.

22:09So Searle did more research. But while that was happening, the company's flawed lab practices came to light. Its aspartame tests were re-examined, revealing poor record-keeping and errors in the data. The FDA responded by putting its approval on pause, leaving aspartame trapped in regulatory purgatory. And it stayed there for years. The time left on the patent ebbing away. Morale at Searle corrodes, and Rumsfeld is running out of patience. In January 1980, the FDA finally moves, but not to approve aspartame. Instead, it makes aspartame the guinea pig for a brand new approval process for food and drink additives by seeking advice from a panel of university scientists.

23:03The FDA calls it a public board of inquiry. The process drags on for months. And Rumsfeld knows the business opportunity is slipping away. The aspartame patent expires in 1987. If approval doesn't come soon, Searle will never recoup its investment. In fall 1980, Rumsfeld decides enough is enough. He orders his lawyers to sue the FDA for failing to make a decision. Searle's outside counsel advises him not to. Suing the regulator is a bad look and could make it harder to get approvals in the future. Rumsfeld does it anyway. A few hours after the lawsuit is filed, the public board of inquiry finally delivers its recommendation.

23:55It advises the FDA to withhold approval because the risk of brain tumors can't be completely ruled out without longer-term studies. Rumsfeld goes wild when he hears the news. There have been dozens of studies saying aspartame is safe, but now they want more. And more studies means more time. And with the patent clock ticking, time is something Searle does not have. So, Rumsfeld reframes the problem. He decides it's no longer a scientific issue. It's a political one. He works his Beltway contacts and leverages his new side gig, advising President-elect Ronald Reagan. It soon pays off. In April 1981, President Reagan installs pharmacologist Arthur Hayes as the new FDA commissioner.

24:51Three months later, Hayes overrules the public board and approves aspartame for use in dry foods on the grounds that the board misinterpreted some of the data and that another study found no evidence of aspartame increasing the risk of brain tumors. Now, Searle must make up for lost time. The company uses its political influence to get Congress to pass a law with a single purpose, to extend the patent on aspartame until the end of 1992. Searle's executives also pick up the phone and invite the makers of Sweet 'n Low to a meeting.

25:31It's 1981, and in Skokie, Illinois, Cumberland President Marvin Eisenstadt and his father, founder Ben, are in a large meeting room at Searle's headquarters. Sitting opposite them is a squad of slick Searle executives and lawyers. Behind them, floor-to-ceiling windows offer a view of a parking lot and a highway. It's a world away from the red brick buildings that surround Cumberland's factory in Brooklyn. Out of the corner of his eye, Marvin notices a Searle executive in a nearby office practicing his golf putting. The Searle executive who invited them here slides a folded slip of paper across the table.

26:11This is our offer. I think you'll find it generous. Marvin unfolds the note. He and his dad stare at the multi-million dollar figure written on it. It's way more than Cumberland is worth. Ben looks up, surprised. Yeah, that's generous, but, uh, why? Well, as you know, we're about to bring aspartame to market and we intend to get into the tabletop sweetener business. We think Sweet 'n Low is a great brand with a strong market position, so we want to turn Sweet 'n Low into an aspartame-based product. And eliminate your biggest competitor, saving you millions in marketing costs, eh? The sural executive smiles.

26:55Well, that's one way of looking at it. But we think this deal would be in all of our interests. That's why we're offering a more than fair sum. We're thinking part cash, part stock, and a vice president position for Marvin. Ben and Marvin knew a takeover offer was coming. and they've already decided they're not interested. Marvin folds up the slip of paper. We don't want to sell. We value our independence and are loyal to our employees. Now, we'd be open to discussing a merger, one where we maintain our independence. Well, a merger of that kind isn't of interest to us, but we could explore assurances on jobs.

27:39Maybe no job losses for the first year? Marvin shakes his head. No, I have to be able to sleep at night. Look, you're a big corporation. I know you'll end up laying people off. But we're a family business. Loyalty matters to us. You agree, Pop? 100%. The Searle team looks put out. Then the mood shifts. Well, I would urge you to reconsider. We're entering the tabletop sweetener market one way or another, and you know that aspartame tastes better than saccharin. And you also know it doesn't come with a this-might-cause-cancer warning label. The FDA could pull the plug on saccharin any day. Your business is a castle made of sand.

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28:28We're offering you a lifeline. Ben nods. Oh, believe me, I know all of that. But the FDA said it was going to ban saccharin in 77 and it's now, what, four years later? And it's still here. Besides, if you thought the FDA was going to pull it from the market, you wouldn't be offering us a dime. You'd just wait until that day comes, eh? Well, we have the resources to compete with Sweet 'n Lowe. You do know that, right? Oh, sure. But whatever happens next, at least it'll be an honest fight. Decided by the man and the woman on the street, not here in this room. So, uh, I thank you for this generous offer.

29:10But it's not for us.

29:18In 1982, having failed to buy Sweet 'n Low, Searle brings aspartame to market, but under two different names. If you're a consumer reaching for a packet to sweeten your coffee, it's called Equal. It comes in light blue packets, a direct rival to Sweet 'n Low's pink. But if you're a food and drink manufacturer, you're buying the same sweetener under a different name, NutraSweet. The decision to brand an ingredient is unusual, but Searle has a challenge to overcome. Aspartame tastes better than saccharin and doesn't require a cancer warning on the packaging. But it's 47 times more expensive. The extra cost is partly due to production costs.

30:07Aspartame is a more complicated compound to create. And since it's not as sweet as saccharin, you need more of it for the same level of sweetness. But it's also because Searle owns the patent. It has a monopoly on the supply of aspartame. So it gets to decide the price. And having spent millions getting aspartame approved, Searle wants to recoup its investment and make as much money as it can before its patent expires. But the resulting price difference is big enough for manufacturers to balk at using the new sweetener. So, Searle needs to stoke public demand for products containing aspartame.

30:48It starts by requiring manufacturers who use the sweetener to put the NutraSweet logo on their packaging. It also seeks to raise awareness using free gumballs and TV ads. Last year, over two million people got something of a surprise in the mail. Their first taste of NutriSweet, and of all things, a gumbo. What's NutriSweet? It's a sweetening ingredient that isn't fattening. A sweetening ingredient that isn't artificial like saccharine. Wait a minute. Isn't artificial? Let's just be clear. Aspartame is absolutely an artificial sweetener. But since it's built from amino acids that also occur naturally in foods, well, Searle is leaning pretty hard into that association.

31:46Now, compared to saccharin, which comes from processed coal tar and petrochemicals, amino acids certainly sound less artificial. But here's a little secret about marketing. Often it's not about making up facts. It's about deciding which facts get top billing. The Gumballs adds an equal kickstart sales of aspartame. NutraSweet gets added to sugar-free Kool-Aid and Quaker half-seas cereal. But Rumsfeld knows this is just the warm-up. Dry foods and tabletop sweeteners aren't where the big money is. The real Bonanza lies in soft drinks. Diet Coke has just launched. The cola war between Pepsi and Coca-Cola is pushing soda sales sky high.

32:32The entire tabletop sweetener market is worth$110 million. The diet soda market? That's worth more than$3 billion. If Searle can convince the diet soda companies to switch from saccharin to NutraSweet, it will make hundreds of millions of dollars. And so, in 1983, with the FDA about to approve aspartame for use in beverages, Searle sets out to conquer diet soda.

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34:19It's 1983, and in Hartsdale, New York, Pepsi Cola CEO Roger Enrico is dining at a high-end French restaurant with Robert Shapiro, the president of Searle's NutraSweet division. The FDA is expected to approve aspartame for use in beverages within weeks. And Shapiro is keen to get the cola giants on board. You know, we need Pepsi, or we need Coca-Cola, and that means I'm more willing to be flexible on price today than I will be later on. Enrico is interested. Aspartame sounds promising. Better taste and no cancer warning. Diet Pepsi has lost ground since Diet Coke launched last year. Maybe this new sweetener could help it fight back.

35:03That's good to know. Price is a concern, but what's the catch? Well, there's two. Go on. The first is supply. We're still ramping up production. I can't guarantee sufficient supply for all potential buyers. Well, how long will those who miss out have to wait? A year? Oh, no, no, no, less than that. A few months, maybe less. Okay, I think I can live with that. What's the other catch? Well, we want a guaranteed minimum amount of aspartame in the formula. Enrico blinks. You want control over our recipe? Only the amount of aspartame in it. Well, what if that makes it sweeter than we want? Those are our terms.

35:48What you're asking for makes no sense. You're asking for the right to dictate how every diet soda in America tastes. If people don't like the sweetness level you've chosen, the whole category tanks. Not just us. Everyone. Well, we're not prepared to change our position. Then I don't see how we can make a deal. Not right now. The two men quietly finish their meal. It's a disappointment for both of them. Enrico hoped Diet Pepsi would be first to include aspartame, but Searle's demands are too high. And that's about to give Diet Coke an edge.

36:37A few weeks later, Shapiro makes a deal to add NutraSweet to Diet Coke as part of a blend of aspartame and saccharin. The move catches Pepsi off guard. Enrico assumed the Coca-Cola company would also reject Shapiro's demands. Now, he realizes the smart play was to say yes, then renegotiate when they got into the details. In July 1983, the FDA approves aspartame for use in beverages. Within weeks, the new Diet Coke, with its mix of aspartame and saccharin, is in stores. And with the NutraSweet brand on its bottles and cans, sales of Diet Coke, boom. Diet Pepsi finds itself playing catch-up. But Pepsi isn't about to let that stand.

37:29At PepsiCo headquarters in Purchase, New York, Enrico meets with his boss, PepsiCo CEO Don Kendall. He tells Kendall his team wants to go one step further than Coca-Cola and use only aspartame in Diet Pepsi. But it's a gamble. It will cost$40 to$60 million a year. If it doesn't boost sales, it'll hammer the bottom line. Kendall asks whether aspartame really tastes that much better. Enrico shakes his head. It doesn't. In fact, in blind taste tests, soda drinkers can't tell the difference between an all-aspartame recipe and a blend of saccharin and aspartame. By now, Kendall's ready to tell Enrico to stop wasting his time.

38:17But then Enrico gets to his main point. He says the taste difference is irrelevant because consumers don't buy blind. They buy with their eyes open, and they want their soda to be 100 % NutraSweet. This is one of the oldest lessons in marketing. If products were judged only in blind taste tests, branding departments would be a whole lot smaller. But people buy with expectations, reputations, and labels already in mind. Is a granola bar or a breakfast bar healthier than a cereal bar? Look more closely at the ingredients list and get back to me. Often, perception becomes part of the product itself.

39:03NutraSweet is a selling point. Consumers want it, and they don't want saccharin. But while diet soda companies are talking up how their products contain NutraSweet, they are still mostly sweetened by saccharin. If Diet Pepsi goes all in, 100 % NutraSweet, zero saccharin, it can expose how Diet Coke still contains saccharin and give consumers what they're really looking for. Kendall is convinced. He persuades Searle boss Donald Rumsfeld to give Pepsi a lower price for being the first soda to go all in on aspartame. Then, Pepsi announces the switch using TV ads that highlight the saccharin in Coca-Cola's diet sodas.

39:51There's something you should know about diet colas. All of Pepsi's diet colas contain 100 % NutraSweet, no saccharin. All of Coca-Cola's diet soft drinks contain almost twice as much saccharin as they do NutraSweet. The switch immediately boosts Diet Pepsi's sales. Diet Coke quickly moves to 100 % NutraSweet itself and gets a sales bounce, too. Searle's decision to turn its ingredient into a brand is paying off. The NutraSweet logo is now a ticket to higher sales, which helps manufacturers justify the higher prices they pay for the patented sweetener. Me? I prefer Sweet 'n Low. I like the bitter aftertaste, but this is a clever strategy.

40:45Searle isn't just selling a sweetener anymore. It's selling an ingredient as a co-brand. We've seen the same playbook with things like Intel Inside or Cortex, right? Once consumers start looking for the ingredient by name, manufacturers have an incentive to make a big deal about it instead of just keeping it invisible. And it's not just soda where Searle is winning either. It's coming for the one place Sweet 'n Low thought it was safe. the tabletop.

41:19It's spring 1984, and at Cumberland Packings Factory in Brooklyn, the Sweet 'n Low manufacturer is grappling with the impact of Equal's arrival. When Equal launched, Cumberland President Marvin Eisenstadt expected Sweet 'n Low's sales to fall by a third. It didn't happen. Instead, Sales are holding steady, and so are profits. Sweet 'n Low customers are proving loyal. They think Equal's not sweet enough. But Equal isn't failing. Far from it. Instead of stealing sales from Sweet 'n Low, it's convincing new customers to use sweeteners instead of sugar. People who avoided saccharin because they disliked its taste or found the cancer warnings off-putting.

42:02Demand for Equal has doubled the size of the market. Cumberland's sales are resilient, but its share of the market, well, that's shrinking. By spring 1984, Sweet 'n Low has gone from more than 70 % of the market to 66%, and equals already claimed a quarter. But right now, Cumberland is distracted by another issue. Since 1977, Sweet 'n Low's main ingredient, saccharin, has been living on borrowed time. Congress has been repeatedly delaying the FDA's ban, but that protection needs to be renewed every 18 months. And in April 1985, it's set to expire again. To make sure the sweetener gets another stay of execution, Cumberland appoints Joe Asaro as its vice president of government affairs.

42:55On the surface, he's a strange choice. A solidly built, semi-literate immigrant from Sicily who first got hired by Cumberland in the 1970s as a construction contractor. But he's charismatic and connected. He knows people in Washington. A lot more than you'd expect a Long Island construction guy to know. How he built such an impressive Rolodex mystifies some at Cumberland. But there's no doubt they exist. The evidence hangs on the walls of his office, which is covered with photos of him shaking hands with notable politicians from both parties. There's even one of him with President Reagan. So, Cumberland gives him a title, an office, and a budget, and then leaves him to work his magic.

43:45And lo and behold, in the spring of 1985, Congress votes overwhelmingly to once again overrule the FDA and delay the ban on saccharin and sweeten-low. for another two years. But Sakharin's latest stay of execution can't hide the reality that Cumberland is losing ground. In 1985, Equal replaces Sweet 'n Low as the nation's best-selling sugar substitute, a feat aided by Searle spending$25 million a year on advertising, while Cumberland spends very little. Cumberland hoped to win on price. Sweet & Low costs$1.60 for a box of 100 sachets. Equal costs almost$2 more. But the price difference isn't enough to stop Equal's rise.

44:36With both Equal and NutraSweet seizing market share, Searle is riding high. Aspartame is delivering annual revenues of more than$580 million. And Searle CEO Donald Rumsfeld seizes the moment. In July 1985, he strikes a deal to sell Searle to chemical giant Monsanto for$2.7 billion. And having delivered a massive payday for Searle stockholders, he steps down and returns to politics.

45:16In 1988, needing a way to hit back at equal, Cumberland sees an opportunity in a new artificial sweetener that's just been approved by the FDA. Its name is a Cecilfame K. Created by a German chemical firm, it tastes more like sugar than saccharin, and there are no known health concerns. Cumberland uses it to create a new tabletop sweetener called Sweet One, which it puts in blue sachets that look near identical to equals. Monsanto sues for trademark infringement, arguing that Sweet One is a deliberate attempt to confuse customers. Cumberland refuses to back down. Its president, Marvin Eisenstadt, thinks Sweet One can turn the tide and claw back the market share Sweet & Low has lost.

46:06But while he mounts an aggressive pushback, a threat from within is about to be exposed.

46:18It's summer 1988, and on the Long Island Expressway, Jeff Eisenstadt takes the off-ramp towards Greenvale, New York. Jeff is Marvin's son, a red-haired surfer who, after finishing his studies, reluctantly left San Diego to take a job as a vice president at the family business. A few days ago, while looking through the accounts, he noticed something odd. Three of Cumberland's factory parts suppliers are all located at the same address, here in Greenvale. So today, Jeff is dropping by to take a look. He glances at the paper map unfurled on the passenger seat and slows as he nears the location on Glencove Road.

47:02He pulls over and steps out of his car, looks around and double-checks the map. But he's in the right place. He expected to see loading bays, industrial units, maybe a large warehouse. Instead, he's standing in a strip mall, and there's no sign of any of Cumberland's suppliers. Jeff knows in his gut he's stumbled upon something he shouldn't have, something dark and rotten in the family business. The suppliers he came here to see don't exist. They're fronts for fraud. And Jeff has no idea how deep this goes.

47:53Be sure to follow Business Wars on Audible or wherever you get your podcasts. and Audible subscribers can listen to new episodes of Business Wars one week early and ad-free right now. All you have to do is join Audible in the Audible app or by subscribing on Apple Podcasts.

48:14From Audible Originals, this is Episode 1 of the Sweetener Wars for Business Wars. A quick note about the recreations you've been hearing. In most cases, we can't know exactly what was said. Those scenes are dramatizations, but they're based on research. If you want to know more about this story, we recommend Sweet and Low by Rick Cohen and Sweet Success by Joseph McCann. If you'd like to hear more about the artificial sweetener business, make sure to check out the audiobook version of Empty Pleasures by Carolyn De La Pena right now. It's on Honorable. And if you want to learn more about the cola wars, check out our earlier series, Coca-Cola vs.

48:51Pepsi. I'm your host, David Brown. Tristan Donovan of Yellow Ant wrote and produced this story. Research by David Walensky. Our senior producers are Jenny Bloom and Emily Frost. Karen Lowe is our producer emeritus. Our managing producer is Desi Blaylock. Fact-checking by Gabrielle Drolet. Voice acting by Chloe Elmore. Sound design by Ryan Potesta. Kyle Randall is our lead sound designer. Executive producer for Audible, Jenny Lauer-Becklin. Head of creative development at Audible, Kate Navin. Head of Audible Originals North America, Marshall Louis. Chief Content Officer Rachel Giazza. Copyright 2026 by Audible Originals, LLC.

49:29Sound recording copyright 2026 by Audible Originals, LLC.

49:41During World War II, New York communist Julius Rosenberg began spying for the Soviet Union. Soon he was persuading other Americans to betray their country as well. But when his wife's brother joined the Manhattan Project, Julius targeted him as a valuable new recruit and inadvertently set the stage for the ultimate betrayal. Hi, I'm Lindsey Graham, host of Audible's original show, American Scandal. We bring to life some of the biggest controversies in U.S. history. Presidential lies, environmental disasters, corporate fraud. In our latest series, two young New Yorkers meet and fall in love. Julius and Ethel Rosenberg's commitment to each other is matched only by their commitment to communism, and the couple risks everything to help the Soviet Union develop an atomic bomb.

50:25But when they're uncovered, they have to make an impossible choice about where their loyalty truly lies. Follow American Scandal wherever you get your podcasts. Audible subscribers can listen to all episodes of American Scandal The Rosenbergs ad-free right now. Join Audible today by downloading the Audible app.

From the publisher

The promise seemed miraculous. Sweetness minus the calories. But when studies begin to link artificial sweeteners with cancer, the entire industry faces oblivion. And it'll take some lightning-fast pivots and Donald Rumsfeld to pull it back from the brink.

If you’d like to hear more about the artificial sweetener business, you can listen to the audiobook version of “Empty Pleasures” by Carolyn de la Peña right now on Audible.

Audible subscribers can listen to all episodes of Business Wars ad-free right now. Join Audible today by downloading the Audible app.

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